【摘要】 为更好地净化空气，减少甲烷等非二氧化碳温室气体的温室效应，采用计算流体动力学（CFD）模拟的方法研究了Trombe墙对甲醛和甲烷的降解效果，考察了太阳光照射强度、Trombe墙高度、空气流道宽度、风速、入口浓度等因素对降解效果的影响。结果表明：太阳光强度增加可促进甲醛和甲烷的降解，甲烷对光强变化更加敏感；Trombe墙较适宜的高度为1.4～1.7 m；空气流道宽度增加，降低了甲醛和甲烷的降解率；风速增加，甲醛和甲烷的降解率略有升高，但空气净化量却明显降低；入口浓度增加，甲醛的降解率和空气净化量先升高后降低，而甲烷的分解率和空气净化量略有降低，但降幅很小。更多还原

【Abstract】 To better purify the air and reduce the greenhouse effect of non carbon dioxide such as methane,computational fluid dynamics(CFD) simulation is used to study the degradation effect of Trombe wall on formaldehyde and methane. The effect of sunlight intensity, Trombe wall height, air channel width, wind speed and inlet concentration on the degradation is investigated. The results show that the increase of sunlight intensity can promote the degradation of formaldehyde and methane, and methane is more sensitive to the change of light intensity; The proper height of Trombe wall is 1.4～1.7 m; The degradation rate of formaldehyde and methane decreases with the increase of air channel width, but increases slightly with the increase of wind speed. The amount of air purification, however, decreases significantly; With the increase of formaldehyde inlet concentration, the degradation rate of formaldehyde and the amount of air purification first rises and then falls, while the decomposition rate of methane and the amount of air purification decreases slightly within a tiny range.更多还原